Acquisition - Summary of Purchase Price Allocation of Acquired Assets and Assumed Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024	May 30, 2023
Business Acquisition [Line Items]
Goodwill	$ 1,621,473	$ 1,621,763
Inmarsat Holdings [Member]
Business Acquisition [Line Items]
Current assets			$ 641,893
Property, equipment and satellites			4,363,049
Identifiable intangible assets			2,570,000
Other assets			388,745
Total assets acquired			7,963,687
Current liabilities			(598,296)
Long-term debt, excluding short-term portion			(3,519,774)
Other long-term liabilities			(2,629,406)
Total liabilities assumed			(6,747,476)
Goodwill			1,462,881
Total consideration transferred			$ 2,679,092